RPC: Hide softfork if timeout is 0

Author: jl2012

src/rpc/blockchain.cpp

@@ -868,6 +868,15 @@ static UniValue BIP9SoftForkDesc(const Consensus::Params& consensusParams, Conse
     return rv;
 }
 
+void BIP9SoftForkDescPushBack(UniValue& bip9_softforks, const std::string &name, const Consensus::Params& consensusParams, Consensus::DeploymentPos id)
+{
+    // Deployments with timeout value of 0 are hidden.
+    // A timeout value of 0 guarantees a softfork will never be activated.
+    // This is used when softfork codes are merged without specifying the deployment schedule.
+    if (consensusParams.vDeployments[id].nTimeout > 0)
+        bip9_softforks.push_back(Pair(name, BIP9SoftForkDesc(consensusParams, id)));
+}
+
 UniValue getblockchaininfo(const UniValue& params, bool fHelp)
 {
     if (fHelp || params.size() != 0)
@@ -901,7 +910,7 @@ UniValue getblockchaininfo(const UniValue& params, bool fHelp)
             "  ],\n"
             "  \"bip9_softforks\": {          (object) status of BIP9 softforks in progress\n"
             "     \"xxxx\" : {                (string) name of the softfork\n"
-            "        \"status\": \"xxxx\",    (string) one of \"defined\", \"started\", \"lockedin\", \"active\", \"failed\"\n"
+            "        \"status\": \"xxxx\",    (string) one of \"defined\", \"started\", \"locked_in\", \"active\", \"failed\"\n"
             "        \"bit\": xx,             (numeric) the bit, 0-28, in the block version field used to signal this soft fork\n"
             "        \"startTime\": xx,       (numeric) the minimum median time past of a block at which the bit gains its meaning\n"
             "        \"timeout\": xx          (numeric) the median time past of a block at which the deployment is considered failed if not yet locked in\n"
@@ -933,8 +942,8 @@ UniValue getblockchaininfo(const UniValue& params, bool fHelp)
     softforks.push_back(SoftForkDesc("bip34", 2, tip, consensusParams));
     softforks.push_back(SoftForkDesc("bip66", 3, tip, consensusParams));
     softforks.push_back(SoftForkDesc("bip65", 4, tip, consensusParams));
-    bip9_softforks.push_back(Pair("csv", BIP9SoftForkDesc(consensusParams, Consensus::DEPLOYMENT_CSV)));
-    bip9_softforks.push_back(Pair("segwit", BIP9SoftForkDesc(consensusParams, Consensus::DEPLOYMENT_SEGWIT)));
+    BIP9SoftForkDescPushBack(bip9_softforks, "csv", consensusParams, Consensus::DEPLOYMENT_CSV);
+    BIP9SoftForkDescPushBack(bip9_softforks, "segwit", consensusParams, Consensus::DEPLOYMENT_SEGWIT);
     obj.push_back(Pair("softforks",             softforks));
     obj.push_back(Pair("bip9_softforks", bip9_softforks));